The cranial nerves are a set of twelve pairs of nerves that travel to and from the brain. Each has a different function. For example, the olfactory nerve is essential for detecting smells. The ...

The 12 cranial nerves are pairs of nerves that start in different parts of your brain. Learn to explore each nerve in a 3D diagram.

The endocrine system helps regulate bodily functions through hormone secretion. ... Explore the interactive 3-D diagram below to learn more about the endocrine system.

Hinge joints allow bones to move in one direction back and forth, much like the hinge on a door. This article looks at their anatomy and function and includes an interactive diagram.